door name plate : flores100 doors 2014 level 51 walkthrough
3 gears with different color and shape :
left : green
top : yellow
right : blue
3 buttons around the carpet on floor
hint : click the buttons to rotate the gears until they look similar to the pattern on door

solution :
find out which white dots will affect which gear colors :
first button will affect the blue
second button will affect the green
third button will affect the yellow

now click on these buttons to open the door :
1st button (left) : 2 times
2nd button (bottom) : 6 times
3rd button (right) : 6 times